13979207 has 8 divisors (see below), whose sum is σ = 15278592. Its totient is φ = 12684600.

The previous prime is 13979197. The next prime is 13979209. The reversal of 13979207 is 70297931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13979207 - 2⁴ = 13979191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13979209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8138 + ... + 9704.

It is an arithmetic number, because the mean of its divisors is an integer number (1909824).

Almost surely, 2^13979207 is an apocalyptic number.

13979207 is a deficient number, since it is larger than the sum of its proper divisors (1299385).

13979207 is a wasteful number, since it uses less digits than its factorization.

13979207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2389.

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 13979207 is about 3738.8777728083. The cubic root of 13979207 is about 240.8948480398.

The spelling of 13979207 in words is "thirteen million, nine hundred seventy-nine thousand, two hundred seven".